Ultrasonic hair treatment device

Abstract

In an ultrasonic hair treatment device comprising a vibrator having a vibration element for generating ultrasonic vibrations and a receiver facing the vibrator as to apply the ultrasonic vibrations to a bundle of hairs which is pinched between the vibrator and the receiver, the vibration element has an oblong plate shape so as to have a plurality of resonance points arranged like a periodic lattice on a vibration face disposed in a thickness direction thereof, a plurality of circular recesses or grooves for trapping a hair treatment agent therein is formed on a vibration face of a head of the vibrator facing the receiver corresponding to the resonance points of the vibration element.

1. An ultrasonic hair treatment device comprising a vibrator having a vibration element for generating ultrasonic vibrations and a receiver facing the vibrator as to apply the ultrasonic vibrations to a bundle of hairs which is pinched between the vibrator and the receiver, characterized by that
 the vibration element has an oblong plate shape so as to have a plurality of resonance points arranged like a periodic lattice on a vibration face disposed in a thickness direction thereof; 
 the vibrator has a header having an oblong plate shape and laminated on the vibration face of the vibration element; 
 a plurality of concave portions for trapping a hair treatment agent therein is formed on a face of the header facing the receiver so as to include points corresponding to the resonance points of the vibration element; 
 the concave portions are circular recesses, each formed at a point corresponding to each of the resonance points of the vibration element; and 
 a reception face of the receiver facing a vibration face of the header is formed to be flat. 
 
     
     
       2. The ultrasonic hair treatment device in accordance with  claim 1 , wherein
 the vibration element utilizes a vibration mode of longitudinal piezoelectric effect in the thickness direction thereof. 
 
     
     
       3. The ultrasonic hair treatment device in accordance with  claim 1 , wherein
 the receiver is made of a synthetic resin foam. 
 
     
     
       4. The ultrasonic hair treatment device in accordance with  claim 1 , wherein
 a pair of pinching members, rear end of which are hinged; and 
 the vibrator and the receiver are respectively provided at front end portions of the pinching members so that a longer side of the oblong plate shape becomes parallel to a longitudinal direction of the pinching member. 
 
     
     
       5. The ultrasonic hair treatment device in accordance with  claim 1 , wherein
 the vibration face of the header except the recesses is formed to be flat so as to be contacted with the reception face of the receiver, closely.